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videoscale: small cleanups

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Use BLEND macro
Fix NV12 corner case
This commit is contained in:
Wim Taymans 2013-09-10 16:05:14 +02:00
parent d365b68517
commit ccf53052a0
1 changed files with 34 additions and 49 deletions
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83
gst/videoscale/vs_scanline.c
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@ -37,6 +37,9 @@
/* greyscale, i.e., single componenet */
#define BLEND(a,b,x) (((a) * (65536 - (x)) + (b) * (x)) >> 16)
#define BLEND15(a,b,x) (((a) * (32768 - (x)) + (b) * (x)) >> 15)
void
vs_scanline_downsample_Y (uint8_t * dest, uint8_t * src, int n)
{
@ -111,16 +114,15 @@ vs_scanline_resample_linear_Y16 (uint8_t * dest, uint8_t * src, int src_width,
for (i = 0; i < n; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (j + 1 < src_width)
d[i] = (s[j] * (65536 - x) + s[j + 1] * x) >> 16;
else
if (j + 1 < src_width) {
x = acc & 0xffff;
d[i] = BLEND (s[j], s[j + 1], x);
} else
d[i] = s[j];
acc += increment;
}
*accumulator = acc;
}
@ -225,21 +227,17 @@ vs_scanline_resample_linear_RGB (uint8_t * dest, uint8_t * src, int src_width,
for (i = 0; i < n; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (j + 1 < src_width) {
dest[i * 3 + 0] =
(src[j * 3 + 0] * (65536 - x) + src[j * 3 + 3] * x) >> 16;
dest[i * 3 + 1] =
(src[j * 3 + 1] * (65536 - x) + src[j * 3 + 4] * x) >> 16;
dest[i * 3 + 2] =
(src[j * 3 + 2] * (65536 - x) + src[j * 3 + 5] * x) >> 16;
x = acc & 0xffff;
dest[i * 3 + 0] = BLEND (src[j * 3 + 0], src[j * 3 + 3], x);
dest[i * 3 + 1] = BLEND (src[j * 3 + 1], src[j * 3 + 4], x);
dest[i * 3 + 2] = BLEND (src[j * 3 + 2], src[j * 3 + 5], x);
} else {
dest[i * 3 + 0] = src[j * 3 + 0];
dest[i * 3 + 1] = src[j * 3 + 1];
dest[i * 3 + 2] = src[j * 3 + 2];
}
acc += increment;
}
@ -530,21 +528,17 @@ vs_scanline_resample_linear_NV12 (uint8_t * dest, uint8_t * src, int src_width,
for (i = 0; i < n; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (j + 1 < src_width) {
dest[i * 2 + 0] =
(src[j * 2 + 0] * (65536 - x) + src[j * 2 + 2] * x) >> 16;
dest[i * 2 + 1] =
(src[j * 2 + 1] * (65536 - x) + src[j * 2 + 3] * x) >> 16;
x = acc & 0xffff;
dest[i * 2 + 0] = BLEND (src[j * 2 + 0], src[j * 2 + 2], x);
dest[i * 2 + 1] = BLEND (src[j * 2 + 1], src[j * 2 + 3], x);
} else {
dest[i * 4 + 0] = src[j * 2 + 0];
dest[i * 4 + 1] = src[j * 2 + 1];
dest[i * 2 + 0] = src[j * 2 + 0];
dest[i * 2 + 1] = src[j * 2 + 1];
}
acc += increment;
}
*accumulator = acc;
}
@ -621,13 +615,12 @@ vs_scanline_resample_linear_RGB565 (uint8_t * dest_u8, uint8_t * src_u8,
for (i = 0; i < n; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (j + 1 < src_width) {
dest[i] = RGB565 (
(RGB565_R (src[j]) * (65536 - x) + RGB565_R (src[j + 1]) * x) >> 16,
(RGB565_G (src[j]) * (65536 - x) + RGB565_G (src[j + 1]) * x) >> 16,
(RGB565_B (src[j]) * (65536 - x) + RGB565_B (src[j + 1]) * x) >> 16);
x = acc & 0xffff;
dest[i] = RGB565 (BLEND (RGB565_R (src[j]), RGB565_R (src[j + 1]), x),
BLEND (RGB565_G (src[j]), RGB565_G (src[j + 1]), x),
BLEND (RGB565_B (src[j]), RGB565_B (src[j + 1]), x));
} else {
dest[i] = RGB565 (RGB565_R (src[j]),
RGB565_G (src[j]), RGB565_B (src[j]));
@ -649,10 +642,9 @@ vs_scanline_merge_linear_RGB565 (uint8_t * dest_u8, uint8_t * src1_u8,
int i;
for (i = 0; i < n; i++) {
dest[i] = RGB565 (
(RGB565_R (src1[i]) * (65536 - x) + RGB565_R (src2[i]) * x) >> 16,
(RGB565_G (src1[i]) * (65536 - x) + RGB565_G (src2[i]) * x) >> 16,
(RGB565_B (src1[i]) * (65536 - x) + RGB565_B (src2[i]) * x) >> 16);
dest[i] = RGB565 (BLEND (RGB565_R (src1[i]), RGB565_R (src2[i]), x),
BLEND (RGB565_G (src1[i]), RGB565_G (src2[i]), x),
BLEND (RGB565_B (src1[i]), RGB565_B (src2[i]), x));
}
}
@ -716,13 +708,12 @@ vs_scanline_resample_linear_RGB555 (uint8_t * dest_u8, uint8_t * src_u8,
for (i = 0; i < n; i++) {
j = acc >> 16;
x = acc & 0xffff;
if (j + 1 < src_width) {
dest[i] = RGB555 (
(RGB555_R (src[j]) * (65536 - x) + RGB555_R (src[j + 1]) * x) >> 16,
(RGB555_G (src[j]) * (65536 - x) + RGB555_G (src[j + 1]) * x) >> 16,
(RGB555_B (src[j]) * (65536 - x) + RGB555_B (src[j + 1]) * x) >> 16);
x = acc & 0xffff;
dest[i] = RGB555 (BLEND (RGB555_R (src[j]), RGB555_R (src[j + 1]), x),
BLEND (RGB555_G (src[j]), RGB555_G (src[j + 1]), x),
BLEND (RGB555_B (src[j]), RGB555_B (src[j + 1]), x));
} else {
dest[i] = RGB555 (RGB555_R (src[j]),
RGB555_G (src[j]), RGB555_B (src[j]));
@ -744,10 +735,9 @@ vs_scanline_merge_linear_RGB555 (uint8_t * dest_u8, uint8_t * src1_u8,
int i;
for (i = 0; i < n; i++) {
dest[i] = RGB555 (
(RGB555_R (src1[i]) * (65536 - x) + RGB555_R (src2[i]) * x) >> 16,
(RGB555_G (src1[i]) * (65536 - x) + RGB555_G (src2[i]) * x) >> 16,
(RGB555_B (src1[i]) * (65536 - x) + RGB555_B (src2[i]) * x) >> 16);
dest[i] = RGB555 (BLEND (RGB555_R (src1[i]), RGB555_R (src2[i]), x),
BLEND (RGB555_G (src1[i]), RGB555_G (src2[i]), x),
BLEND (RGB555_B (src1[i]), RGB555_B (src2[i]), x));
}
}
@ -790,21 +780,16 @@ vs_scanline_resample_linear_AYUV64 (uint8_t * dest8, uint8_t * src8,
x = (acc & 0xffff) >> 1;
if (j + 1 < src_width) {
dest[i * 4 + 0] =
(src[j * 3 + 0] * (32768 - x) + src[j * 4 + 4] * x) >> 15;
dest[i * 4 + 1] =
(src[j * 4 + 1] * (32768 - x) + src[j * 4 + 5] * x) >> 15;
dest[i * 4 + 2] =
(src[j * 4 + 2] * (32768 - x) + src[j * 4 + 6] * x) >> 15;
dest[i * 4 + 3] =
(src[j * 4 + 3] * (32768 - x) + src[j * 4 + 7] * x) >> 15;
dest[i * 4 + 0] = BLEND15 (src[j * 4 + 0], src[j * 4 + 4], x);
dest[i * 4 + 1] = BLEND15 (src[j * 4 + 1], src[j * 4 + 5], x);
dest[i * 4 + 2] = BLEND15 (src[j * 4 + 2], src[j * 4 + 6], x);
dest[i * 4 + 3] = BLEND15 (src[j * 4 + 3], src[j * 4 + 7], x);
} else {
dest[i * 4 + 0] = src[j * 4 + 0];
dest[i * 4 + 1] = src[j * 4 + 1];
dest[i * 4 + 2] = src[j * 4 + 2];
dest[i * 4 + 3] = src[j * 4 + 3];
}
acc += increment;
}